Printer a deskjet 3420 printe did not get a cd with it and can not in stall

1. Make sure that the USB cable is not connected to the product. If the USB cable is connected to the product, disconnect it.
2. From the Windows taskbar, click the Windows icon, and then click Devices and Printers. The Devices and Printers window opens.
3. Click Add a printer. The Add Printer window opens.
4. Click Add a local printer.
5. Click Use an existing port.
6. Click the Use an existing port drop-down list, select LPT1: (Printer Port), and then click Next.
7. Under Manufacturer in the Install the printer driver window, click HP.
8. Under Printers, select approriate drive from below list provided and then click Next.
9. In the message window, click Finished.
10. Connect the USB cable to the product, and connect the USB cable to the computer. A Device driver software was not successfully installed window opens.
11. Click Close to close the window.
12. In the Devices and Printers window, right-click the name of the product and then click Printer Properties. The Printer Properties window opens.
13. Click the Ports tab.
14. Click the drop down menu, and then change the port from LPT1 to USB or DOT4.
15. Click OK.
16. In the Properties dialog box, click the General tab.
17. Click Print Test Page.

Determine the appropriate compatible driver

Deskjet 3320, 3325, 3420 and 3520 -------------Deskjet 3600 *
Photosmart 7600 series------------------------------ Deskjet 5600
Deskjet 5850 ---------------------------------------------Deskjet 5600
Photosmart 130, 145, 230 and 245 ---------------Photosmart 330 *
Photosmart 7350 and 7550 --------------------------Deskjet 5550
Deskjet 6122 and 6127 --------------------------------Deskjet 990c *
Deskjet 3820 -----------------------------------------------Deskjet 970cse *
Deskjet 656 ------------------------------------------------Deskjet 660c *
Business Inkjet 1100d ---------------------------------Business Inkjet 1000
Business Inkjet 1100dtn ------------------------------Business Inkjet 1000
Deskjet 9300 ----------------------------------------------Deskjet 1220c *
Deskjet 9650, 9670, 9680, 9680gp---------------- Deskjet 9800

* Available only through Windows Update.

(Happy Printing)

Regards
Rizwan